Long-Term Settlement Prediction for Over- Consolidated Soft Clay under Low Embankment
Received: 9 October 2024 | Revised: 23 October 2024 | Accepted: 27 October 2024 | Online:
Corresponding author: Ngoc Thang Nguyen
Abstract
The long-term post-construction settlement of an embankment laid on a deep, soft soil foundation can give rise to a series of safety concerns and significant structural damage. The settlement is primarily attributed to the creep deformation of the soft soil following the removal of the surcharge load and the impact of traffic loads on the soft soil. In this study, a plan strain triaxial test was conducted to investigate the deformation of an undisturbed soft clay specimen subjected to static and cyclic loading. The results demonstrate that the volume creep and vertical creep are associated with the overconsolidation state of the soft soil. The Over-Consolidated Ratio (OCRq) of shear stress, can be used as a parameter to describe the state of overconsolidation of soft soil under spherical stress. Based on the vertical creep coefficient and considering the influence of stress history on the stress state of soft soil, a two-dimensional long-term settlement model under cyclic loading has been proposed.
Keywords:
soft soil, long-term settlement, cyclic loading, static loading, creep coefficientDownloads
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